Ask a framer, a drywall hanger, and a general contractor the same question and you will get three confident answers. The truth is far simpler than the argument. The difference between sheetrock and drywall is a trademark, not a material. Sheetrock is a brand name owned by USG Corporation, while drywall is the generic term for gypsum wallboard sold by dozens of manufacturers. Understanding the distinction still matters when you are reading a spec sheet or arguing over a change order.
Part of our Paint & Walls guide — explore the full guide →
What Drywall Actually Is
Drywall is a panel of compressed gypsum plaster pressed between two layers of heavy paper. Standard panels measure 4 feet wide by 8, 10, or 12 feet long. Common thicknesses run 1/4, 3/8, 1/2, and 5/8 inch. A 4×8 sheet at 1/2 inch weighs about 52 pounds, which is why drywall hangers typically work in pairs.
The industry invented gypsum board in the 1890s to replace wet plaster on wood lath. Before that, finishing an interior wall took 3 to 5 visits from a plasterer over several days. Drywall cut that process to a single afternoon per room.
Where Sheetrock Comes In
USG Corporation, based in Chicago, started producing gypsum panels in 1916 under the Sheetrock brand. The name stuck so hard in construction language that it became a genericized trademark, like Kleenex for tissue or Band-Aid for adhesive bandages. Every sheet of Sheetrock is drywall, but not every sheet of drywall is Sheetrock.
USG still manufactures the product today, and the Sheetrock line includes specialty panels like Firecode X, Mold Tough, and Ultralight. The formulations and quality controls vary slightly from competing brands, but the basic function is identical.
Major Drywall Brands You Will See
- Sheetrock (USG): The industry benchmark. Widely available at Home Depot, Lowe’s, and local drywall suppliers.
- ToughRock (Georgia-Pacific): Solid mid-tier option. Common at Lowe’s.
- Gold Bond (National Gypsum): Popular in the Southeast and among commercial contractors.
- CertainTeed: Known for its ProRoc line and easy-sanding joint compound.
- PABCO: Regional favorite on the West Coast.
All of these products meet ASTM C1396, the standard specification for gypsum board. A 1/2-inch ToughRock panel behaves identically to a 1/2-inch Sheetrock panel on the same wall.
Does the Brand Matter?
For standard residential work in a dry room, no. The price difference between Sheetrock and a generic panel is usually under $1 per sheet. Most hangers pick whatever the supplier has in stock.
For specialty applications, the formulation matters more than the logo on the back. Moisture-resistant greenboard, fire-rated Type X, and abuse-resistant panels have measurable performance differences between brands. Read the spec sheet, not the brand badge.
Thickness Guide for Homeowners
Choosing the right thickness matters more than choosing the brand. Here is what works where:
- 1/4 inch: Curved walls and skim coat over existing plaster. Too flimsy for stud walls.
- 3/8 inch: Repair work in older homes originally built with 3/8 plaster.
- 1/2 inch: Standard for walls and ceilings in most residential construction. Use ceiling-grade 1/2 for ceilings to prevent sag.
- 5/8 inch: Required by code for garage ceilings, attached to living space, and for fire-rated assemblies. Also reduces sound transmission.
Cost Comparison
At most big-box stores in 2026, a 4×8 foot panel of 1/2-inch Sheetrock runs $13 to $16. Generic drywall of the same dimensions runs $11 to $14. Fire-rated 5/8 Type X jumps to $18 to $22 for either brand. Shop by the sheet for small repairs and by the bundle (usually 40 sheets) for whole-room jobs to save 10 to 15 percent. Lift-gate delivery from a drywall supply yard like L&W Supply or ProBuild typically costs $50 to $100 but saves the strain of hauling 40 sheets with a pickup truck.
Specialty Sheetrock Products Worth Knowing
USG markets several Sheetrock variants that solve specific problems. Sheetrock Brand Ultralight panels weigh about 30 percent less than standard 1/2-inch board, which means a single sheet drops from roughly 52 pounds to 36 pounds. Sheetrock Mold Tough uses a moisture-resistant paper facing and treated gypsum core for bathrooms and basements. Sheetrock Firecode X (5/8 inch Type X) carries a 1-hour fire rating and is required on garage ceilings below living space by the International Residential Code R302.6. National Gypsum and CertainTeed sell direct equivalents to every one of these panels, often at a $1 to $2 savings per sheet.
When Spec Sheets Call for Sheetrock by Name
Some architects specify Sheetrock in the plans by habit or because they designed around a specific USG product like Sheetrock Brand EcoSmart with lower carbon footprint. If the spec names the brand, ask the architect whether an equivalent is acceptable. Most will approve a submittal for Gold Bond or CertainTeed as long as the UL assembly listing matches.
Bottom Line for Homeowners
The difference between sheetrock and drywall comes down to marketing, not materials. Use whichever panel your supplier stocks, pick the correct thickness and fire rating for the application, and focus your money on proper hanging and finishing instead of brand premiums. A good taper working with generic panels will produce a better wall than a rushed installer using Sheetrock Ultralight.
